Battery and lamp tester.



W. F. CASS. BATTERY AND LAMP TESTER. APPLICATION FILED- MAR. 27. 1915 Patented Apr. 18, 1916.

did 2 w v H; AM 5:. ml .l It 1-. 1 4 f WILLIAM F. CASS, 0F ESCANABA, MICHIGAN, ASSIGNOR 0F ONE-HALF TO LOUIS N.

as PATE'I SCHEMMEL, 0F ESCANABA, MICHIGAN.

i BATTERY AND LAMP TESTER.

Specification of Letters Patent.

Patented Apr. 18, 9.16.

T 0 all whom it may cancer-m V Be it known-thatjI, WILLIAM:-. F. CASS, a citizen of the United States, residing at Escanaba, in the county of Delta and State of Michigan, havefinvented certain new and useful Improvements in Battery and Lamp Testers, of which the following is a specification.

This invention relates to battery and lamp testers.

The ordinary dry batteries commonly used for pocket or other flash lights, are

rious sizes and shapes, some having the openings for application of the'test device terminals in the top and bottom; others in the top and side. It becomes necessary in practice, therefore, to test batteries of dif: ferent lengths and shapes and with differiently arranged test openings in the cartons without breaking the seal of the carton. Flash light batteries and the lamps commonly used therewith areusually 2.5 to 3.5

volt capacity: Small flash light electric lamps are commonly sold by dealers who sell flash light batteries and it becomes necessary to test these lamps as well as to test the batteries, before selling them.

My invention has for its object the provision of a simple, inexpensive and reliable flash light battery and lamp tester adapted for rapid and easy testing of flash light battery cells whatever their size and shape and however the test openings in the cartons are arranged, and further, for the testing of flash light lamps, thus obviating the neces- 'sity of cumbersome cell testing methods which have heretofore been employed.

My invention contemplates the provision of relatively movable terminals arranged in a novel manner and having improved circuit connections whereby a flash light battery of any kind may be readily applied to the terminals and the flashing or non-flashing of a test lamp, combined with the circuits in an improved fashion, will signify whether the battery is 'of'the requisite volt-, age or not.

The invention has for a' further object the provision of the aforesaid novel and improved terminals and circuit arrangements together with sockets for the inser tion of flash light lamps whereby they may be tested to determine whether they are of the requisite voltage. v

I am aware that my invention is suscepti ble of modification and I have disclosed hereinafter and shown in the accompanymg drawings, but one embodiment adapted to carry out v the objects and principle thereof.

In the accompanying drawings :Figure 1 1s a front view; Fig. 2, a rear view; Fig. 3, a detail section on line 33, Fig. I; Fig. 4, a detail section on line-H, Fig. 1; Fig. 5, a detail section on line 5-5, Fig. 1; and Fig. 6, a detail section on line 66, Fig. 1..

The parts of .the conductors for the circuits are all carried by a base BS which may be of wood. In the base there are mounted or sunk four miniature base sockets A, B, C, D. The sockets A and B are blank sockets to permit the slipping thereinto and pulling out of the miniature lamps which are to be tested. The sockets C and D are screw sockets for the insertion of miniature test lamps C and D. The sockets A and C are for the accommodation of 2.5 volt lamps and thesockets B and D for 3.5 volt lamps. -One terminal of each socket is connected to a metal pointed hook terminal E mounted on the base BS and pointing longitudinally thereof. The remaining terminals of the sockets A and C are con nec ed by a suitable conductor to the metal plates F and G, the former being disposed at one side of the hook terminal E and the latter extending longitudinally of the, base BS. The remaining terminals of the sockets B and D are connected by a suitable conductor to metal plates H and I constituting, respectively, continuations of the plates F and G, but disconnected therefrom.

Extending through the base BS is aslot ar' which coincides with a corresponding slot in the plates G andI. A hook-shaped pointed contact terminal J which is in line with the hook shaped terminal E, has a base J which is adapted to slide on the plates I hook J and retracting a slot S in is anchored st to hold the hook raised position and to hold in engagement with the r inserted oetweeri l, and s I-SlMp i'i cont cp terminal ct terr uimi which is klguiilst tl plates F and ll Gilli through s. slot M in corresponding to slots in the plates spring rod L carries the conplste L,

Y in tie i-cess he means for 1c contact terminals J cor enged, the object being to these terminals spring-pressed to hell in engagement with the battery ii inserted and to permit yielding at J istmentto accommodate batteries of dirt forest shapes and sizes, Without requiring oiiig screws or nuts or 0t oer adjusting cmcloyment SPTlElg-1Ctlld contacts J and L -ustable. tery, the s is inserted in the smell srt the carton and the is forced dovii against the action v in the top The carton can he to receive the pointed terminal l). The usual volt battery is not long enough to force the terminal 5 below the contact plat-e G. Consequently, the circuit is completed from J to G, G to C, and A and through the 2.5 volt lamp C which sins screwed iii the socket to E and through the battery if the battery is in proper volt lamp C will light.

tubular volt battery, the ll operation is gone through atcries of this voltage are of that the hook J is forced down e lower end of piste G and con- ESQlL'BI'l With G and established i with plate I so that the circuit -.ii fr m the battery to l, thence to I? and B, to contact and to the .isttery. it the battery is good, the 3.5 volt crop i? in socket D will light.

" fist battery is to be tested, iinsl L is inserted in the hole oi the battery csrtou and the conis forced to one side against the of spring" L until the hole in the .n can be made to receive the i volttlssh light battery is :l1 to force the hook L beyond the plate F. Contact is therefore mode from the battery to hook L, thence to plate F and to sockets {l and ii end through volt lump-Ll to l1. It the battery is good, the 52.5 battery l mp i) will light.

When u 3.5 volt list buttery to he tested, the some operation is gone through with, but as volt Fist flash light batteries are of sutlicieiit Widt 1 to force the hook L pest glzite F, the contact plate ll their enthe plate H and the circuit is courpleted through L, l." D and ll hack to hook l3), thereupon lighting the volt lamp if the hettery is good.

W'hen a flash light lamp is to be tested,

:i 2.5 volt flash light battery is placed lietveen the hook terminals l5 and J. The spring S 'ill hold the battery in place. The volt lamps may be tested by simply "pushing; them, one at s time, intothe blankliase socket A. it the lamps are good, they complete the circuit through the blsiilcl A and the lamp being tested is lighted. is then removed and another inserted. same operation is carried out for testing a volt lamp except that s 3.5 volt tubular battery is used and the lamp is pushed into the olsnlob'ase socket B instead of the socket A.

d ith the present tester, flush light bet teriss ct any kind and miniature lamps can be tested as fast as they can handled, resulting in a large increase in speed and accuracy.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, isz--- 1. In a battery tester, a base, contact terminals mounted thereon for bodily slidable movement in relation'to each other to adopt them for relative adjustment to engage e battery to be tested, a test indicator mounted on said base, and circuit connections between the circuits and the test indicator.

2. In a battery tester, a case, a. stationary contact terminal mounted thereon, spring retracted movable Contact terminal mounted on said base, said terminals being adapted to engage a battery to be tested, test indicator mounted on said base, and circuit connections between the terminals snd'thc test indicator.

3. In a battery tester, relatively movable contact terminals adapted to engage a lost tery to be tested, two test indicators both electrically connected to one of the contactt erminals aforesaid, and independent contacts respectively in circuit with the store szridtest indicators and adapted to be independently engaged by the movable contact terminals, whereby one or the other of theawaeoa terminal said terminals being adapted to engage a battery'to be tested, two independent contacts with which the movable contact terminal is adapted to independently engage, one at a time, according to its position, independent test indicators in Circuit with the stationary contact and with the re spective independent contacts last-named,

whereby one or the other of said test indicators will be placed incircuit With the contact terminals according to the position of the spring-retracted contact terminal.

5. In a battery tester, the combination witha base having a slot, of disconnected metallic plates at the ends of said slot, a slide movable in said slot in contact with one on the other of said plates, a terminal on sligtgllsiide, a spring biasing said slide toward one end of said slot, a stationary terminal 7 testimony whereof I afiixmy signature in presence of two Witnesses.

WILLIAM F. CASS. Witnesses 11 A. SAWALL, it A. KAMRATH. 

